Consider the following reaction: 2NiO(s)→2Ni(s)+O2(g)
If O2 is collected over water at 40.0 ∘C and a total pressure of 747 mmHg , what volume of gas will be collected for the complete reaction of 24.45 g of NiO?

What are the spectator ions in 2h+ + so42- + ca2+ + 2r → caso4 + 2h+ + 21?

If a solution had a ph of 7 what is the solution

The picture represents the process that produces most of the energy used by living organisms on earth. which process is represented in the picture? a) the magnetic attraction between two hydrogen nuclei. b) the fusion of hydrogen nuclei to produce a helium nucleus in the core of the sun. c) the fission of hydrogen nuclei to produce a helium nucleus in the core of the sun. d) the chemical reaction between hydrogen nuclei to produce a helium nucleus in earth's atmosphere.